Bluetooth phone handset volume

Gigaset A450 Cordless Landline Phone Cordless phone with caller ID and speakerphone Phonebook transfer via DECT, 2 x AAA battery with talk-time of 8 hours and standby time of 180 hours, 10 redial memory, 50 phonebook entries and list of last 25 missed calls Alphanumeric illuminated keypad with semigraphical display and adjustable handset volume Indoor range: up to 50 meters, Parallel internal and external calls (1 parallel call support), energy saving, paging, text based menu, time display, date display, call duration display, alarm clock, plug and play installation and charging status display